A Statistical Approach to Models for Yield Tables in Even-aged Teak Forests and some Applications

Site quality index for even aged teak forests based on 'top height' is defined and a convenient method of determining the site quality explained. Three equations giving (1) the top height corresponding to a site quality and age, (2) the normal diameter corresponding to a top height and (3) the normal number of trees per acre given the average diameter are presented. These three equations essentially summarise the yield table for even-aged teak forests. Based on the equations the yield tables for different quality classes are reconstructed. A general method of predicting the average diameter at any age of a specified number of initially selected elites uniformly spaced and tended is presented and tables and graph given for Quality Class II forests. The application of the graph to the problem of making optimum use of growing space in growing poles of a specified diameter is explained.